Hose-coupling.



T. l'. MADIGAN.

HOSE COUPLING.

APPucATloN FILED SEPT. z5, 191e.

Patented. Mal. 12%, 1918.

/lVI/EIV TOR sfrefras refr' fr 'n is it e' THOMAS J. MADIGAN, 0F NEW YORK, N. Y., ASSIGNOB. T0 MADIGAN MANUFACTURING COMPANY, mC., 0F YORK, N. Y., A. CORPORATION l01:" NEW YORK.

' nosa-connues.

1,259,423. Srediiwtm 0f Letters Patent. Patented Mar. 12,1913 Application mea september 25. 191e. seal No. 121,941. To all lwhom it may concern: member may be received. Preferably, the

Beit known that I, THOMAS J. MADIGAN, a citizen of the United States, residing the city, county, and State of New York, have invented certain new and useful Improvements in Hose-Couplings; and I do hereby declare the Jfollowing to be a full, clear, andr exact description of the l1 nvention, such as will enable others skilled.y in the art to Ywhich it appertains to make `and use the same. l'

The present invention relates to couplings and is of a type well suited for use: m connecting together lengths of hose, such, for instance, as lire hose.

It is an object of the present invention to provide a construction not easily injured when subjected to rough usage, and more particularly, to provide a construction 1n which all threaded members are inclosed, so

that when the hose is roughly handled or dropped from a wagon to the pavement, the threads will not become deformed and liable to jam during subsequent use. This end is attained without rendering the coupling liable to clogging with ice, snow, sand or the like, under the trying conditions to which fire hose is often subjected.

It it another object of the invention to provide coupling members which Vcan be connected together easily and quickly by one man, and with the certainty that the parts will come together in true alinement and with proper engagement of the threads at the start, and without danger of jamming the threads or stripping them in an effort to force theV coupling members together when they 'are not in true alinement. j

To accomplish the foregoing objects, and others which will hereinafter be made clear, or are inherent in the structure disclosed, the threaded nipple of the male member of the coupling is more or less inclosed in a sleeve. This sleeve may be made integral with the male member and is spaced from the threaded nipple to form an annular recess into which the ,rotating collar ofthe female front part of the threaded.- nipple is devoid of threads and of such a diameter that it will slide along the-tops of the threads in the female member and so will guide the collar on the inside while the collar is being shoved into Aposition preparatory to, engagement with the threads on the nipple.

In the accompanying drawings, vwhich illustrate the preferred embodiment 0f the present invention, f

Figure 1 is a sectional elevation of the elements in coupled relation;

Fig. 2 is an elevation of the male mem- `ber with parts broken away to show the threaded nipple and the inclosing sleeve; Fig. 3 is an end elevation of said male member; and

Fi 4 is an endelevation of thefemale mem er showing notches or recesses in the rotatable collar.

In the embodiment illustrated, the coupling comprises socket members 1 and 2 into which the ends of lengths of ire hose may be connected in suitableA manner. Mounted on socket member 1 and forming with it the female member of the coupling, is a threaded collar 3. This collar is free to turn on socket. member 1 but cannot be removed therefrom .by axial movement. To effect this result, the vcollar 3 is provided with annular grooves 4 which initially are of somewhat larger diameterthan the corresponding corrugations at' the end of socket member 1, and after collar 3 has been slipped or driven into place, socket member 1 is expanded by means of a mandrel under hydraulic pressure, or in other suitable way, until the desired engagement between the corrugations at 4 is secured. Seated against the front end of socket member 1, and preferably retained in a'recess in collar `3,`is a rubber gasket. 5 used forinsuring a watertight joint.

The male member of the coupling comprises a threaded nipple adapted to seat on gasket 5. This may have near its front end a portion 7 free from threads and adapted to serve as a guide by sliding along over the tops of the threads in collar 3 when the parts are being brought together. Outside of this threaded nipple, and spaced therefrom to form an annular tlarin recess, is a relatively thick sleeve 8 prefera ly formed integral with the socket member 2, and eX- tending out far enough to alord protection for the threads on the male member when that member is disconnected and is being roughly handled.- Male members constructed as above described have the advantage that they can be used with female members of standard construction without any alteration therein, and the comparative openness of the annular space within sleeve 8 tendsn to prevent the accumulation therein of sand, ice, snow orthe like, which might accumulate therein under the tryin conditions of service and prevent the free en` trance of collar 3.

In order that foreign material may not become packed within the Haring recess about nipple 6 under any conditions of service, the sleeve 8 is provided with one or more vents or openings 9 through which such material pushed forward by `a rotative movement of collar 3 may escape through the sleeve and out of the Haring annular recess. To facilitate the discharge of such foreign material from the recess, the front edge of collar 3 may plurality of notches 10, the tendency of which is to pulverize and break up the foreign material and swing it aroundl to the nearest opening 9 for discharge therethrough.

With a hose coupling of this construction, a single operator can bring the two members together into true alinement and canthen rotate collar 3 to screw it up on the r thread of nipple 6, and there will .be no stripping of threads or loss of time due to faulty alinement, for before the threads of the collar can come the threads on the nipple, the two parts will have been guided into true alinement b the sliding of the smooth part 7 of the nipple over the tops of the threads within the collar.` The construction gives a sound connection with the rubber gasket, sealin the jointbetween collar 3 and nipple 6, am? also between collar 3 and its socket member 1, and when the parts are disconnected, the sleeve 8 serves as a shield or guard to protect the threads on nipple 6 so that the fire hose can be rou y handled without danger of deforming t e threads of the nipple or otherwise interfering with subsequent eilicient operation.

It has sometimes happened that with fire hose laid across a street, th

e couplings have been crushed by the passage M be provided with a into engagement with fire engines and other vehicles, and, as the 05 distance between opposing wrench studs on the male and female members of the coupling is about equal to the thickness of a hose cart telly, that the wheel of the hose cart has become wedged between opposing wrench studs and picked up and tangled the hose. With applicants construction, the collar on the male member extends outward almost as far as the wrench studs, and so prevents the entry therebetween of a. vehicle wheel or the like. Also, this eollar,'be cause of its shape and its very considerable thickness, gives greater rigidity to the assembled coupling and greater resistance to crushing under conditions of accident. I claim 1. In a hose coupling, the combination of a pair of socket members adapted for attachment to hose ends, being provided with a threaded portion and a sleeve spaced therefrom and ha one of said members ving open- 'ings therethrough, the other of said members being provided lwith an interiorly threaded collar adapted to engage the threaded portion of the first named member and to force foreign material through said openings as said socket members are screwed' openings for the escape of foreign material pushed forward as said socket members are screwed together. i

3. In a coupling, the combination of a. pair of socket members adapted for attachment to hose ends, and a threaded collar mounted to turn on one of said members but incapable of axial movement thereover, said collar having notches in its front edge, the other socket member having a nip le with threads for engagement with the Inside of said collar, the front end of said nipple being smooth to serve as a guide for said eollar during the coupling operation, and a sleeve enveloping the threads on said nipple to rotect them from mechanical inJury wh' e not in use, said sleeve be' spaced from said threads to form a annular recess into which said threaded collar ma enter said sleeve having opening throu which foreign material pushed orward y said threaded collar may annular recess.

4. In a coupling, the combination of a pair of socket members adapted for attachment t9 hose ends, a collar to turn escape from said l on one `Qjgseid socket members, wrench studs outward appromfmately as fer es do the projecting `i"rom-i;l1e-coller,"wrench." studsgwrench studs, seid sleeve being provided projecting from the second socket member, with openingsfor'theescape of foreign ma.-

said second socket member having e threedteriel pushed forward es the socket members 5 edY nipple for engagement with said collar are screwed together.

` and having outside of said nipple e thick In testimony whereofI eixmy simture. sleeve surrounding the same and extending THOMAS J. MADKGE. 

